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Noncanonical Receptor · Journal article
One Health · July 16, 2026
Early or partial results. Treat as a signal, not a conclusion.
This is a comprehensive narrative review of Langya virus (LayV), a newly identified zoonotic paramyxovirus detected in febrile patients in eastern China. The authors synthesize early clinical, epidemiological, molecular, and ecological evidence and identify key research priorities, emphasizing that current data are sufficient to warrant systematic investigation but insufficient to establish pandemic potential or sustained human-to-human transmission.
Narrative review. Synthesis of published literature on LayV epidemiology, clinical features, molecular evolution, animal ecology, and mechanistic studies; original discovery via sentinel surveillance and metagenomic sequencing of febrile patients with animal exposure history in eastern China.. Discovery and surveillance in Shandong, Henan, and neighboring regions of eastern China; detection also in South Korea (animal reservoir)..
A total of 35 acute LayV infections were reported, including 26 cases in which no other pathogen was detected Reported cases presented mainly with fever, fatigue, cough, and vomiting, accompanied by leukopenia, thrombocytopenia, and abnormalities in hepatic and renal function LayV detected in Ussuri white-toothed shrew (Crocidura lasiura) in South Korea; viromic analyses identified LayV in shrew lung tissues along eastern coast of China
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Clinicians should be aware that LayV presents as an acute febrile illness with respiratory and gastrointestinal features and potential hematologic and hepatorenal abnormalities; however, LayV remains rare, geographically restricted, and without documented human-to-human transmission. Current surveillance and diagnostic capacity are insufficient; sustained clinical vigilance in endemic regions is warranted but mass screening is not supported by present evidence.
This is a narrative review synthesizing early-stage discovery of a novel zoonotic virus with limited confirmed cases, no established human-to-human transmission, and incomplete epidemiological and mechanistic data; it identifies research priorities rather than testing a defined hypothesis with controlled evidence.
As stated by the source record.
Quoted from the source exactly as published.
Clinicians should be aware that LayV presents as an acute febrile illness with respiratory and gastrointestinal features and potential hematologic and hepatorenal abnormalities; however, LayV remains rare, geographically restricted, and without documented human-to-human transmission. Current surveillance and diagnostic capacity are insufficient; sustained clinical vigilance in endemic regions is warranted but mass screening is not supported by present evidence.
Graded across the dimensions that decide whether you should act, each from what the source actually supports. There is no single score, and where a dimension was not assessed it says so.
Langya virus (LayV), classified in the species Parahenipavirus langyaense, is a newly identified zoonotic paramyxovirus discovered in febrile patients in eastern China in recent years. The discovery of LayV has expanded the field beyond the prevailing paradigm of highly pathogenic, bat-borne henipaviruses represented by Nipah virus (NiV) and Hendra virus (HeV), toward a parahenipavirus spillover model shaped by shrews, rodents, and agricultural ecological interfaces. Reported cases have mainly presented with fever, fatigue, cough, and vomiting, and may be accompanied by leukopenia, thrombocytopenia, and abnormalities in hepatic and renal function. However, owing to the limited number of cases, restricted surveillance coverage, incomplete follow-up data, and the lack of standardized serological tools, the true burden of infection, full spectrum of natural hosts, role of intermediate hosts, and animal-to-human transmission pathways remain unresolved. Sustained human-to-human transmission has not been confirmed. In recent years, accumulating evidence from viromic analyses of shrew lung tissues along the eastern coast of China, positive detection in the Ussuri white-toothed shrew (Crocidura lasiura) in South Korea, characterization of the LayV genome architecture, P-gene RNA editing, ELISA/multiplex RT-qPCR/CRISPR-Cas12a diagnostic platforms, and structure-based F/G antigen engineering and antibody development has begun to move LayV research from pathogen discovery toward mechanistic dissection and the construction of countermeasure platforms. In this Review, we systematically summarize the discovery of LayV, clinical features and epidemiological evidence, taxonomy and molecular evolution, animal host ecology, noncanonical receptor-mediated entry mechanisms, diagnostic approaches, and immunological intervention strategies. We further propose key research priorities centered on One Health surveillance, identification of the unknown receptor, structure-guided F/G antigen design, and integrated sampling across animal, environmental, and human populations.
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